prions
Unicellular infectious agents are prokaryotes, eukaryotes, bacteria, and protoza.
Infectious diseases spread when bacteria or viruses move from the carrier to others.
Viruses and bacteria can be highly infectious.
Pneumonia is usually cause by bacteria and is infectious. The bacteria are spread by droplets which come from the lungs when coughing or sneezing and which carry the bacteria. This can then be inhaled or breathed in by another person.
Shigella are extremely infectious bacteria, and ingestion of just 10 organisms is enough to cause severe diarrhea and dehydration.
Leprosy
BECAUSE MOST INFECTIOUS BACTERIA ARE OF THIS SIZE BECAUSE MOST INFECTIOUS BACTERIA ARE OF THIS SIZE
bacteria, and other infectious agents are called pathogens. This also includes viruses, even though they technically aren't organisms
No, it is caused by a virus, the Epstein-Barr virus.
fungi and protozoa and bacteria
infectious diseases involve a causative organism, from groups such as bacteria, viruses, fungi and such. Noninfectious diseases are not caused by a specific infectious organism. You get an infective disease from a bacteria or a virus or even a fungus. Other diseases are not caused by these but by other things. For example: cancer.
Pyogenic bacteria are ones that create puss. This type of infection is caused by this type of bacteria.